2. Academic Validation
  3. Lentinan inhibits oxidative stress and alleviates LPS-induced inflammation and apoptosis of BMECs by activating the Nrf2 signaling pathway

Lentinan inhibits oxidative stress and alleviates LPS-induced inflammation and apoptosis of BMECs by activating the Nrf2 signaling pathway

  • Int J Biol Macromol. 2022 Oct 12;S0141-8130(22)02256-5. doi: 10.1016/j.ijbiomac.2022.10.024.
Meijuan Meng 1,  Ran Huo 1,  Yan Wang 1,  Nana Ma 1,  Xiaoli Shi 2,  Xiangzhen Shen 1,  Guangjun Chang 3
Affiliations

Affiliations

  • 1 College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China.
  • 2 College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China.
  • 3 College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China; Animal Disease Prevention and Control Center of Ningxia Hui Autonomous Region, Yinchuan 750001, Ningxia, China. Electronic address: [email protected].
PMID: 36243161 DOI: 10.1016/j.ijbiomac.2022.10.024
Abstract

Lentinan (LNT) has been reported to have a wide range of functions, including anti-inflammatory, antioxidant and Anticancer properties. LNT may provide a protective effect in dairy cow mastitis. In this study, we investigated the effect of LNT on lipopolysaccharide (LPS)-induced injury of bovine mammary epithelial cells (BMECs) and the possible mechanism. First, we treated BMECs with different concentrations of LPS to study the effects of LPS on oxidative stress and inflammation in BMECs. Then, we examined the effects of LNT by dividing the cells into seven groups: the control group (CON), LPS treatment group (LPS), Acetyl-l-cysteine (NAC) pretreatment group (NAC + LPS), LNT pretreatment group (LNT + LPS), ML385 and LNT pretreatment group (ML385 + LNT + LPS), LNT treatment group (LNT) and NAC treatment group (NAC). The results showed that LPS-triggered intracellular ROS production and the downregulation of Nrf-2 and HO-1 in BMECs were blocked by LNT pretreatment. LNT inhibited the expression of inflammatory genes and proteins by inhibiting of NF-κB and MAPK. In addition, LNT attenuated LPS induced-apoptosis in BMECs. However, ML385 reversed the protective effect of LNT. Taken together, LNT can be used as a natural protective agent against LPS-triggered BMECs damage through its anti-inflammatory, antioxidant and antiapoptotic effects through modulation of the Nrf2 pathway.

Keywords

Apoptosis; BMECs; Inflammation; LPS; Lentinan; Oxidative stress.

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